The quantitation of how much time constitutes short and recent varies by disease and by context, but the core denotation of acute is always qualitatively in contrast with chronic, which denotes long-lasting disease (for example, in acute leukemia and chronic leukemia).
View full size image. Thomas Edison is usually credited with the invention of the light bulb, but the famous American inventor wasn't the only one who contributed to the development of this revolutionary technology.
England 1879 Thomas Edison is the most celebrated of incandescent inventors. He was able to succeed in creating the first reliable (therefore marketable) light bulb. His bulbs made after 1880 lasted a whopping 600 hours. He then hired lots of talented engineers and created the world's most famous invention factory.